stoughton



(No Model.)

0. PAQUETTE.

NUT.

NQ. 561,913. Patented June 9, 1896.

UNITED STATES PATENT irren,

OCTAVE PAQUETTE, OF lVHITEEIELD, NEV HAMPSHIRE, ASSIGNOR OF ONE-HALF TOALEXANDER E. STOUGHTON, PETER T. STOUGHTON, AND JAMES C. STOUGHTON, OFSAME PLACE.

NUT.

SPECIFICATION forming part of Letters Patent No. 561,913, dated June 9,1896.

Application iiled February 27, 1896. Serial No. 581,060. (No model.)

To all whom it 12mg/ concern:

Be it known that I, Oc'rAvn PAQUETTE, of lVhiteiield, county of Goos,State of NenT Hampshire, have invented au Improvement in Nuts, of whichthe following description, in connection with the accompanying drawings,is a specification, like letters on the drawings representing likeparts.

illlyinvention relates to nuts, and has for its object the provision ofa nut, adapted for all ordinary uses, which will cnt its own thread, it'necessary, and clear out the threads if placed on a bolt Whose threadsare mutilated, clogged, stripped, or otherwise injured.

My improved nut also acts as a lock-nut, and possesses other advantages,as will appear in the following detailed description.

In the drawings, Figure l is a perspective view of my improved nut. Fig.2 is a central vertical section thereof, on an enlarged scale, taken online 2 2 of Fig. 3; and Fig. 8 is a plan 'View thereof.

Referring to the drawings, A designates a nut, which may be of any usualsize'or shape, provided internally with any variety of threads a. Attheir rear or inner portion the threads a are cut away longitudinally ofthe bore of the nut, so as to provide a pluralityof thrcadnntting pointsor edges Where the corners of the threads remain adjacent the cuts.

In the present embodiment of my invention I have shown three series ofcutters or cutting edges c, which are preferably disposed slightlyflaring from each other or in conical arrangement. These cutting edgesmay be provided in various Ways, but I prefer to form them by cuttingaway the adjacent metal in a substantially radial line, as indicated atc', the clearance-pocket C formed thereby being curved around at c2 tomeet the cutting-surface of the next series of cutters c. Theclearance-pockets C are preferably iiared or beveled outwardlyconsiderably, so as to prevent all tendency of the chips and shavingsgrooved out from the bolt by the cutters from Working into the nut andclogging the free movement of the saine.

As my improved nut is turned forward on a bolt or stud the successivecutters cut into the material with increasing depth, the shavin beingejected bythe flaring open-mouthed pockets C. As the nut cuts its Wayfarther onto the bolt the threads of the latter are thereby tightly andaccurately fitted to the threads of the nut, so as to render it certainthat the nut cannot loosen and jar off, the nut thus locking itself inplace.

In Work Where bolts are driven into place frequently the threads arejammed or stripped in driving, and in such cases niy invention isparticularly valuable. The nut Will cut out the old and mutilatedthreads and renew the life of the bolt, thus adjusting itself Where itwould be impossible to pnt on the ordinary nut. Also, in instances Wherethe boltthreads are not cut or threaded far enough toward the head toenable the usual nut to beA tightened against the material being bolted,the present invention enables the nut to cut down on the bolt therequired distance, at the same time setting' or locking itself firmly inplace.

lVhile I have shown my invention as having three cutters, I do notdesire to be limited to that number, inasmuch as any number of cuttersdesired may be employed. Many other changes may be made Within thespirit and scope of my invention.

The cutting end of the nut will be highly tempered or the entire nutcase-hardened or otherwise made iit for cutting the material it isdesigned to be used on.

'Vhat I claim is- 1. A nut provided With contin nous threads, and havingone or more cutters formed in said threads and to cut a path for saidthreads, substantially as described.

2. A nut provided With continuous threads at one end, and having nearits other end a plurality of cutting edges, arranged to flare slightlyoutward toward the rear of the nut, to successively cut a path for saidthreads, substantially as described.

3. A nut provided with ordinary threads, and having a plurality ofcutting edges, to cut out a path for said threads, pockets being formedcircumferentially between' successive cutting edges, to remove the saidcuttings, substantially as described.

e. A nut provided with ordinary threads,

ICO

and having a plurality of cutting edges', name to this speecation in thepresence of adapted to out into the material on which the twosubscribing Witnesses..

nut is turned flaring pockets bein@ formed hs ereumferentfally beweensueeessive cutting OCTAVE mkPAQUETTE' 5 edges, to automatically removethe debris of fitnessesz said cutting, substantially as described.

In testimony whereof I have signed my ROYAL F. FA-ssETT, JAMES HARTWELL.

